富水砂层顶管下穿高速公路的方案及措施

Schemes and Measures for Pipe Jacking Project Undercrossing Highway in Water-Rich Sand Layer

文章结合深圳地区市政管网工程,介绍了富水砂层顶管工程下穿高速公路的设计、施工及监测方案。设计方案采用高压旋喷桩进行始发、接收洞口的土体加固,加强施工控制措施并进行路面沉降监测。工程效果及监测数据表明,设计方案和相关措施是可靠、有效的,可为类似工程提供参考。

In combination with the municipal pipe network project in Shenzhen,the design,construction,and monitoring scheme of the pipe jacking project undercrossing the expressway in water-rich sand layer is introduced.The high-pressure jet grouting piles is designed to reinforce the soil at the starting and arriving shaft,strengthen control measures is taken during construction,and ground subsidence is monitored.Engineering effects and monitoring data show that the engineering design and measures are reliable and effective,and can provide a reference for similar projects.